gecko-dev/webapprt/WebappRT.jsm

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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
this.EXPORTED_SYMBOLS = ["WebappRT"];
const Cc = Components.classes;
const Ci = Components.interfaces;
const Cu = Components.utils;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/Promise.jsm");
Cu.import("resource://gre/modules/AppsUtils.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "OS",
"resource://gre/modules/osfile.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "Task",
"resource://gre/modules/Task.jsm");
XPCOMUtils.defineLazyModuleGetter(this, 'NativeApp',
'resource://gre/modules/NativeApp.jsm');
XPCOMUtils.defineLazyServiceGetter(this, "appsService",
"@mozilla.org/AppsService;1",
"nsIAppsService");
this.WebappRT = {
_configPromise: null,
get configPromise() {
if (!this._configPromise) {
this._configPromise = Task.spawn(function*() {
let webappJson = OS.Path.join(Services.dirsvc.get("AppRegD", Ci.nsIFile).path,
"webapp.json");
WebappRT.config = yield AppsUtils.loadJSONAsync(webappJson);
});
}
return this._configPromise;
},
get launchURI() {
return this.localeManifest.fullLaunchPath();
},
get localeManifest() {
return new ManifestHelper(this.config.app.manifest,
this.config.app.origin,
this.config.app.manifestURL);
},
get appID() {
let manifestURL = this.config.app.manifestURL;
if (!manifestURL) {
return Ci.nsIScriptSecurityManager.NO_APP_ID;
}
return appsService.getAppLocalIdByManifestURL(manifestURL);
},
isUpdatePending: Task.async(function*() {
let webappJson = OS.Path.join(Services.dirsvc.get("AppRegD", Ci.nsIFile).path,
"update", "webapp.json");
if (!(yield OS.File.exists(webappJson))) {
return false;
}
return true;
}),
applyUpdate: Task.async(function*() {
let webappJson = OS.Path.join(Services.dirsvc.get("AppRegD", Ci.nsIFile).path,
"update", "webapp.json");
let config = yield AppsUtils.loadJSONAsync(webappJson);
let nativeApp = new NativeApp(config.app, config.app.manifest,
config.app.categories,
config.registryDir);
try {
yield nativeApp.applyUpdate(config.app);
} catch (ex) {
return false;
}
// The update has been applied successfully, the new config file
// is the config file that was in the update directory.
this.config = config;
this._configPromise = Promise.resolve();
return true;
}),
startUpdateService: function() {
let manifestURL = this.config.app.manifestURL;
// We used to install apps without storing their manifest URL.
// Now we can't update them.
if (!manifestURL) {
return;
}
// Check for updates once a day.
let timerManager = Cc["@mozilla.org/updates/timer-manager;1"].
getService(Ci.nsIUpdateTimerManager);
timerManager.registerTimer("updateTimer", () => {
let window = Services.wm.getMostRecentWindow("webapprt:webapp");
window.navigator.mozApps.mgmt.getAll().onsuccess = function() {
let thisApp = null;
for (let app of this.result) {
if (app.manifestURL == manifestURL) {
thisApp = app;
break;
}
}
// This shouldn't happen if the app is installed.
if (!thisApp) {
Cu.reportError("Couldn't find the app in the webapps registry");
return;
}
thisApp.ondownloadavailable = () => {
// Download available, download it!
thisApp.download();
};
thisApp.ondownloadsuccess = () => {
// Update downloaded, apply it!
window.navigator.mozApps.mgmt.applyDownload(thisApp);
};
thisApp.ondownloadapplied = () => {
// Application updated, nothing to do.
};
thisApp.checkForUpdate();
}
}, Services.prefs.getIntPref("webapprt.app_update_interval"));
},
};